Multiple stereotype casting machine



Feb. 9, 1937. H; A. w. WOOD 2,070,328

MULTIPLE STEREOTYPE CASTING MACHINE Original Filed May 26, 1932 2 Sheets-Sheet l Feb. 9, 1937.

H. A. W. WOOD MULTIPLE STEREOTYPE CASTING MACHINE Original Filed May 26, 1932 I 2 sheets sheet. 2

Patented Feb. 9, 1937 UNITED STATES MULTIPLE STEREOTYPE CASTING MACHINE Henry A. Wise Wood, New York, N. Y., assignor to Wood Newspaper Machinery Corporation, New York, N. Y., a corporation of Virginia Application May 26, 1932, Serial No. 613,668 Renewed December 30, 1935 17 Claims.

This invention relates particularly to a casting mechanism where cores and boxes may be removed easily and replaced by cores and boxes of different diameters so that, with a small number of machines having the proper adjustments, a large variety of products may be produced without excessive delay or expense. It is capable of general use, but is particularly adapted for magazine work where there is comparatively large variety in the size and shape of the pages of the product.

The other principal objects of the invention are to provide a core which has a plurality of different radii after adjustment, for casting different sized plates; to provide removable boxes having different radii; to provide a core which may be covered with paper or some other material for insulating purposes, and to provide these improvements in a practical form for use in the printing industry.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a side elevation of a casting machine constructed in accordance with this invention;

Fig. 2 is a plan of the machine in the closed or casting position;

Fig. 3 is a similar view showing the core partially turned;

Fig. 4 is a similar view of a modified form showing the core carrying two surfaces, each of a different radius, with the casting being shown as being made on the larger one, and

Fig. 5 is a similar view with a different casting box arranged so as to make a casting on smaller radius.

This invention relates to a type of stereotype plate casting machine comprising a reciprocating back and a rotatable core and known as an autoplate machine. Ordinarily in these machines the core is cylindrical in shape and semi-cylindrical plates are cast on it, first on one side and then on the opposite side. This is used for various kinds of printing, particularly newspaper printing. However, in magazine work cylinders of quite large diameters have to be used and it is quite common to have a number of cylinders having different printing diameters on account of the different sized pages employed. In order to provide automatic machinery for casting from these several sizes of printing cylinders, a large investment is necessary for casting equipment for the cylinders of different diameters.

This invention relates particularly to the reduction of this large investment by providing a casting core which has two, or some other number, of cylindrical arcs of one diameter and other arcs of other diameters and combining them with replaceable backs of different radii to correspond with those of the core. This reduces the amount of equipment required and provides for the printing of pages of different sizes, particularly for use in magazine work, but capable of general application.

The invention is shown in a form in which there is a base Ill supporting a frame ll having an operating shaft 12 provided with a crank l3 which, by means of links M, will slide back and forth, on the frame I l, the casting back 15. This casting back is shown as supported by rolls I6 on tracks H on opposite sides of the frame II. The backs l5 may be replaced by backs having matrix carrying surfaces N3 of different curvatures. Of course, it is understood that the matrix 19 is fixed by clips 26 to the back in the usual way.

Also mounted on the base 10 is a vertical shaft having a gear 2! by which it is driven in any suitable way through a pinion 22. On this shaft is fixed a core 23 having, in the form shown in Figs. 1, 2 and 3, two convex surfaces, shown as surfaces 24 against which the metal is to be cast. These are arranged so that the diameter of the whole core is very much reduced. This can be done in magazine work because the plates are not made semi-cylindrical but only of a width considerably less than a semi-cylinder.

The casting boxes or backs l5, of course, are arranged on a radius having the same center when the mold is closed. Therefore when the back is drawn back, as shown in Fig. 3, the core 23 can be turned, as shown in that figure. In case only two surfaces 24 are used opposite each other, it is turned half way around between each two casting operations. Other numbers of the surfaces 24 than two can be used.

Another feature shown in these figures is the provision of a covering of paper or some other material which is known to be beneficial in the casting of stereotype plates. This is an insulating material. As the hot metal is rapidly poured into the space between the back l5 and. the core surface 24, this insulating material 2'! retards the chilling of the metal until the mold is completely filled, thereby insuring well-filled solid plates.

It will be noticed that there are a pair of reeling mechanisms for each casting surface in Figs. 1, 2 and 3, each comprising two rolls 26 on which the paper 2'! is rolled up. This provides simple means for keeping the paper or insulating material 21 taut and permits the presentation of a new, clean surface when the surface becomes burned or torn.

The process of casting is substantially the same as in those cases in which a cylindrical core is used and semi-cylindrical plates are cast on opposite sides.

In the form shown in Figs. 4 and 5 all the parts above mentioned are present. In this case four arcs are shown, two arcs 30 having a longer radius and two arcs 3! having a smaller radius. In this case the back 15 fits the are 30 of the core while a separate back 35 has to be used for the are 3!. Here, the machine being set up as shown in Fig. 4, alternate casts from the backs l5 and the arcs 3% are made as long as desired. When it is desired to make a cast from the arc 3| and the back 35 the core 33 is turned 90 around, from the position shown'in Fig. 4, to that shown in Fig. 5, and the back 35 is put in to replace the back l5, all the other features of the casting mechanism being the same.

In other words it is necessary only to slide out one of the casting boxes and slide in another and then turn the core 90 around if only four casting surfaces are provided. It will be understood, of course, that the core can be made with any other number of casting surfaces, but preferably they are arranged in opposite pairs and a different casting back has to be employed for each pair.

In these two figures also, although there are twice as many casting surfaces, only the same number of reeling mechanisms is employed. One reeling roll 26 between each two adjacent casting surfaces is used so that when a change is made from one to another the reeling of the paper can be changed as shown in Figs. 4 and 5.

It is obvious, therefore, that this invention provides for removable boxes and adjustable cores having different radii and also provides for covering the convex core with a partial insulating material in sheet form such as paper or the like.

Although I have illustrated and described only two forms of the invention I am aware of the fact that other modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited in this respect otherwise than as set forth in the claims but what I do claim is:

1. In a casting machine, the combination of a curved back movable laterally and a rotatable core having a plurality of casting surfaces thereon for alternate cooperation with the back, the radii of said surfaces being greater than half the width of the core at the same point.

2. In a casting machine, the combination of a reciprocable concave back constituting a small arc of a circle, a rotatable core having a plurality of convex casting surfaces thereon, each adapted to cooperate with said back, and an additional series of casting surfaces on the core having a different radius.

3. In a casting machine, the combination of a frame adapted to reciprocate, a removable and replaceable concave back on said frame, and a rotatable core having a plurality of sets of convex casting surfaces, each set having a different radius and each adapted to cooperate with a different back supported in said frame.

4. In a casting machine, the combination of a frame adapted to reciprocate, a removable and replaceable concave back on said frame, a rotatable core having a plurality of sets of convex casting surfaces, each set having a different radius and each adapted to cooperate with a different back supported in said frame, with means for covering the casting surfaces of said core comprising a sheet of material passing over the casting surface, and a reel at each end of each casting surface .by which the paper may be kept taut.

5. In a casting machine, the combination of a reciprocable concave back constituting a small arc of a circle, a rotatable core having a plurality of. convex casting surfaces thereon, each adapted to cooperate with said back, an additional series of casting surfaces on the core having a different radius, with means for covering the casting surfaces of said core comprising a sheet of material passing over the casting surface, and a reel at each end of each casting surface by which the paper may be kept taut.

6. In a casting machine, the combination of a concave back movable laterally and a rotatable core having a plurality of convex casting surfaces thereon adapted to fit against the back to provide a complete casting box, each of said casting surfaces constituting only a comparatively small arc of the complete circle, with means for covering the casting surfaces of said core comprising a sheet of material passing over the casting surposite convex casting surfaces and a second pair of opposite convex casting surfaces of shorter radii than the first pair.

10. A core for a casting box having a plurality vof convex casting surfaces having a radius greater than half the width of the core and provided with a sheet of protecting material extending over said casting surfaces.

11. A core for a casting box having a plurality of convex casting surfaces of different radii and provided with a sheet of protecting material exe tending over said casting surfaces.

12. A core for a casting box having a pair of opposite convex casting surfaces and a second pair of opposite convex casting surfaces of shorter radii than the first pair and provided with a sheet of protecting material extending over said casting surfaces.

13. A core for a casting box having a plurality of convex casting surfaces having a radius greater than half the width of the core and provided with sheets of protecting material extending over said casting surfaces, and means for moving said sheets after a number of casts to present a new part of the sheet for subsequent casts.

14. A core for a casting box having a plurality of convex casting surfaces of different radii and provided with sheets of protecting material extending over said casting surfaces, and means for moving said sheets after a number of casts to present a new part of the sheet for subsequent casts.

15. A core for a casting box having a plurality of convex casting surfaces having a radius greater than half the width of the core and provided with sheets of protecting material extending over sair' casting surfaces, and means for moving said sheets after a number of casts to present a new part of the sheet for subsequent casts,

16. In a casting machine, the combination of a core and a back, with removable and replaceable members adapted to provide the back with concavities of different radii.

17. A matrix carrying casting box having replaceable members to provide concavities of different radii.

HENRY A. WISE WOOD. 

